Shell Rotella T6 Synthetic Diesel Oil is the Absolute Best available for your Diesel Vehicle in my humble opinion. It’s 100% Synthetic (Not a Synthetic Blend) with an Additive Package to help extend the life of your engine. I’ve been using Shell Rotella now for over twenty years.

This oil can't be beat for both value and how it handles the old school and new school diesels. Has all the right ingredients to handle my old 12v cummins with ease. Being a 5-40, much better in the winter months compared to the older school 15-40. I get zero burn off and this stuff just works. Highly recommend and have a friend that works in the R

Shell Rotella T6 is the best heavy duty oil on the market. Price point for superior protection attracted my attention back in 2015. I have been through three 6.6L Duramax vehicles since and not one issue with engine wear. From extreme heat to Midwest winters this oil constantly performs.

i know this is oil for diesel engines, but a lot of owners with turbo gasoline cars such as Subaru WRX and STi's use it for their cars. I picked it up because I drive a Nissan 300ZX and fellow 300ZX drivers on forums were recommending this oil over Royal Purple, AMSoil, Mobil1, and all other full synthetic oil. I tried it out because Royal Purple was burning to quickly and after driving a while, my oil dipstick still shows clean oil on it!

I like this oil because I don't have any oil consumption issues. It is the recommended oil for my diesel pickup (10.5 quarts). I change it and filter myself at approximately every 8,500 to 8,800 miles (10K recommended by Ram). About .5 quart is missing when it is changed with the filter. This has been consistent since it was new. No leaks are apparent. Currently have 80K miles on the engine.

Shell Rotella T6 synthetic oil is truly worth the money. It's performance is excellent in our heavy duty Peterbilt 387 CAT C15 engines and our 2002 Ford F350 Super duty 7.3L V8 turbo deisel engine. We will not put in any other oil in our CAT C15s, they run smooth with no knocks. We usually buy this by the barrel, but needed it sooner.

Did some research and found out that this oil contains the additives of older style oils of the 60 and 70's! So it protects the older engines with the type of parts that the newer oils don't necessarily cover. Put it in my old Jeep Cherokee and notice a much quieter running machine with a more consistent oil pressure. We will see how things work out after another 1000 miles or so on this batch. And I'm changing over all the oils in my 4 other vehicle to this also!

This is a knock on Walmart not Shell. The oil is great and it's all I use in my diesel engines. HOWEVER, Walmart sent me three (yes three) OPENED/USED gallons of oil. They all three were tied in trash bags and weighed 6.75,7%267.5 lbs respectively. What are you trying to pull Walmart???? RIDICULOUS!!!!

One of the gallons of oil had been damaged and leaked oil soaking the shipping box. The box was then left on my front porch. There are now oil stains on the porch. The box had obviously been treated with very little care. The delivery person should have certainly known not to put a leaking box containing oil on a customers porch. At the very least the damaged gallon container of oil needs to be replaced.

This is the least expensive synthetic oil available that meets the specs for my metric bike (2012 Kawasaki Concours). I just started using Rotella T6 about 2300 miles ago due to not being able to find any specifically marketed synthetic bike oil for less than $10/qt. Apparently lots of folks have been using this oil as a substitute cycle oil for years with mixed results across the board from 'It's awesome' to 'It destroyed my engine/clutch'. My experience so far has been great with no noticeable difference between using this oil and using Valvoline 4T Stroke full synthetic. The shifting just after the change is smooth then becomes a little notchy after about 400 miles just like the Valvoline had in the past (the bike has exhibited this since new, now approaching 40k miles with 11 oil changes and the original clutch still chugging away). Sam's was selling this 3 gallon case for $forty-six seventy when taking off $fifteen for a special they had. At only $three eighty nine a quart I was in for enough to outlast this bikes foreseeable service with me.